Audi A8 D4 Rear Door Inner Seal Rubber Gasket Left Right N/O/S 4H0833721E

Audi A8 D4 Rear Door Inner Seal Rubber Gasket Left Right is an original component from the Door seals group, designed for the rear body section of the Audi luxury limousine. Thanks to its factory profile and precise fit to the door edge, it ensures a tight seal, reduces road noise, and helps maintain acoustic comfort inside the vehicle.

Specifications and technical data

• SKU: 4H0833721E
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0833721E
• Substitutable numbers: 4H0833721E, 4H0 833 721 E, 4H0 833 721 G, 4H0833721G
• Location on the vehicle: Rear, Right, Left
• Part type: Door Seal
• Category: Door Seals

Purpose and vehicle placement

The presented seal is designed for installation on the rear door on the left or right side, on the inner side. Its cross-section and flexibility are adapted to the construction of the Audi A8 D4 door, which allows for proper adhesion to the frame and quick seating in the factory guides. This placement is crucial for limiting air drafts, moisture penetration, and reducing noise from the wheel arches and rear axle, which is particularly important in premium class vehicles.

Technical and functional characteristics

The seal is made of wear-resistant rubber, selected for operation in variable temperature and humidity conditions. The material structure ensures:

• stable adhesion to the door edge and bodywork,
• vibration damping transmitted from the body to the door,
• reduction of squeaking and knocking when closing,
• compatibility with factory locks and hinges without the need for modifications. By maintaining the original geometry, the seal supports the correct door closing line, which is important for both driving comfort and protecting the interior from dirt and excessive moisture.

Original origin and fitment for Audi

The component comes from the Audi production line, which means compliance with factory quality and dimension standards. The original origin translates into:

• a secure fit to the Audi A8 D4 door profile,
• no need for cutting or modifications during installation,
• a consistent look with other body seals. Compared to universal replacements, using an original seal reduces the risk of leaks, premature wear, and problems with proper door closing, which is especially important in vehicles equipped with extensive cabin soundproofing.

Condition, service application, and installation benefits

The seal is in used condition, making it an attractive service solution for Audi A8 D4 owners who want to restore proper door sealing without the need to invest in a new component. It is a practical choice for:

• replacing a worn or brittle seal,
• post-accident repairs in the rear body section,
• eliminating noise and drafts that appear at higher speeds. Installing the original rear door rubber allows for improved acoustic comfort, reduced dust and water ingress, and maintenance of proper operating conditions for upholstery and electrical installations within the door.

Complementary Audi door seals and service knowledge

If you are planning a comprehensive repair or upgrade of the door zone in your Audi and need other components from the same group, such as additional edge seals, window frame seals, or inner rubber profiles, check the available parts in the Audi door seals category. When selecting used sealing components, it is worth knowing the specifics of original parts from disassembly and the differences compared to cheap replacements – this is discussed in more detail in the article: Most popular repairs in Ford cars: why cheap replacements are a false economy and it is better to choose a used original?, the conclusions of which can also be applied to service practices in cars of other brands.